Underwater Ethernet (CAT6) Cable for Subsea Applications
Underwater Ethernet (CAT6) Cable for Subsea Applications
Introduction
This cable is designed for subsea and underwater applications requiring reliable data transmission under continuous immersion and dynamic flexing conditions. It combines high mechanical flexibility with robust resistance to seawater, pressure variations, oils, and extreme temperatures. The cable is halogen-free, silicone-free, and flame retardant according to IEC60332-1.
Specifications
Conductor
Material: Bare copper, Class 5 flexibility (meets IEC60228)
Construction: 7 / 0.19 mm diameter wire (±0.004 mm)
Stranded diameter: approx. 0.5 mm
Insulation
Material: HDPE (High-Density Polyethylene)
Cabling
Pairs are twisted with optimized lay lengths to ensure consistent impedance and crosstalk performance.
Shielding
Foil: Aluminum-laminated polyester tape with water-blocking characteristics
Braid: Tinned copper braid, 85% optical coverage – provides effective protection against EMI and acts as a barrier against marine growth and mechanical damage
Construction ensures long-term reliability in submerged, high-pressure environments
Inner Layer
Torsion-resistant layer: Polyester yarn to enhance mechanical stability during underwater flexing and deployment
Outer Sheath
Material: Flexible PVC (standard) or PUR (preferred for extended submersion)
PUR version offers enhanced hydrolysis resistance and maintains flexibility in cold seawater
Outer diameter: 7.0 mm ±0.2 mm
Color: (specify as required)
Mechanical Characteristics
Minimum bending radius: 5 × cable diameter (during installation and operation)
Flex life: ≥ 5 million cycles (PVC sheath); ≥ 10 million cycles (PUR sheath) – suitable for ROV tether management systems and underwater manipulators
Environmental Resistance
Submersion: Continuous operation in fresh and seawater
Pressure resistance: Suitable for moderate depths (specify depth rating if available, otherwise note tested pressure)
Operating temperature:
PVC version: -25°C to +80°C
PUR version: -60°C to +105°C
Fluid resistance: Excellent resistance to seawater, mineral oils, hydraulic fluids, and dilute chemicals
UV resistance: Suitable for above-water exposure during deployment
Biofouling: Smooth sheath surface reduces marine growth adhesion
Electrical Characteristics
Characteristic impedance: 100 Ω ±15 Ω (stable under pressure and temperature variations)
Conductor resistance: meets Class 5 requirements (IEC60228)
Insulation resistance: (specify if available)
Standards Compliance
Flame retardant: IEC60332-1
RoHS compliant
Designed to meet Category 5e / 6 performance (depending on specific construction)
Applications
ROV (Remotely Operated Vehicle) tethers
Subsea sensors and instrumentation
Underwater cameras and communication systems
Marine robotics and autonomous underwater vehicles (AUVs)
Offshore and oceanographic research equipment
See also:
